package com.itheima.dao.Impl;

import com.itheima.domain.User;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.PreparedStatementCreator;
import org.springframework.jdbc.support.GeneratedKeyHolder;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.List;

public class UserDaoImpl implements UserDao {
    private JdbcTemplate jdbcTemplate;
    public void setJdbcTemplate(JdbcTemplate jdbcTemplate){
        this.jdbcTemplate=jdbcTemplate;
    }
    public List<User> findAll() {
        List<User> userList = jdbcTemplate.query("select * from sys_user", new BeanPropertyRowMapper<User>(User.class));
        return userList;
    }

    public Long save(final User user) {
        //创建PreparedStatementCreator
        PreparedStatementCreator creator = new PreparedStatementCreator() {
            public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {
                //使用原始jdbc完成有个PreparedStatement的组建
                PreparedStatement preparedStatement = connection.prepareStatement("insert into sys_user values(?,?,?,?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
                preparedStatement.setObject(1, null);
                preparedStatement.setString(2, user.getUsername());
                preparedStatement.setString(3, user.getEmail());
                preparedStatement.setString(4, user.getPassword());
                preparedStatement.setString(5, user.getPhoneNum());
                return preparedStatement;
            }
        };
        //创建keyHolder
        GeneratedKeyHolder keyHolder = new GeneratedKeyHolder();
        jdbcTemplate.update(creator, keyHolder);
        //获得生成的主键
        long userId = keyHolder.getKey().longValue();
        return userId; //返回当前保存用户的id 该id是数据库自动生成的
    }
    public void saveUserRoleRel(Long userId, Long[] roleIds) {
        for(Long roleId:roleIds){
            jdbcTemplate.update("insert into sys_user_role values(?,?)",userId,roleId);
        }

    }

    public void delUserRoleRel(Long userId) {
            jdbcTemplate.update("delete  from sys_user_role where userId=?",userId);
    }

    public void del(Long userId) {
        jdbcTemplate.update("delete  from sys_user where id=?",userId);
    }
}
